CVE Vulnerability

CVE-2020-27208

The flash read-out protection (RDP) level is not enforced during the device initialization phase of the SoloKeys Solo 4.0.0 & Somu and the Nitrokey FIDO2 token. This allows an adversary to downgrade the RDP level and access secrets such as private ECC keys from SRAM via the debug interface.

4.6 /10

CVSS v2.0 :

V3 Legend

Vector :

Exploitability : 3.9 / Impact : 6.4

Attack Vector

Attack Complexity

Privileges Required

User Interaction

Confidentiality Impact PARTIAL

Integrity Impact PARTIAL

Availability Impact PARTIAL

Scope

6.8 /10

CVSS v3.0 : MEDIUM

V3 Legend

Vector :

Exploitability : 0.9 / Impact : 5.9

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References
Link Resource
https://twitter.com/SoloKeysSec Product
https://solokeys.com Product
https://eprint.iacr.org/2021/640 Third Party Advisory
https://www.aisec.fraunhofer.de/en/FirmwareProtection.html Exploit Third Party Advisory
https://github.com/solokeys/solo/commit/a9c02cd354f34b48195a342c7f524abdef5cbcec Patch Third Party Advisory
https://www.aisec.fraunhofer.de/de/das-institut/wissenschaftliche-exzellenz/security-and-trust-in-open-source-security-tokens.html Third Party Advisory
Configurations

Configuration 1
Information

Published : 2021-05-21 12:15

Updated : 2021-05-28 03:41

NVD link : CVE-2020-27208

Mitre link : CVE-2020-27208

Products Affected
No products.
CWE
CWE-326

Inadequate Encryption Strength